:root {
    --color-primary: #0e7490;
    --color-primary-dark: #164e63;
    --color-accent: #f59e0b;
    --color-surface: #ecfeff;
    --color-text: #0c1a1f;
    --rgb-primary: 14,116,144;
    --rgb-accent: 245,158,11;
    --radius-sm: 4px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 22px;
    --shadow-sm: 0 1px 3px rgba(14,116,144,.14), 0 1px 2px rgba(14,116,144,.08);
    --shadow-md: 0 6px 18px -2px rgba(14,116,144,.18), 0 3px 8px -2px rgba(14,116,144,.1);
    --shadow-lg: 0 24px 48px -8px rgba(14,116,144,.28), 0 10px 20px -6px rgba(14,116,144,.14), 0 0 0 1px rgba(14,116,144,.06);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #ffffff 0%, #f0fdff 50%, #ffffff 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: linear-gradient(135deg, rgba(236,254,255,0.6) 0%, rgba(255,255,255,0.9) 40%, rgba(245,158,11,0.04) 100%); }
section:nth-of-type(even), .section:nth-of-type(even) { background: linear-gradient(160deg, #164e63 0%, #0e7490 55%, #155e75 100%); }
section:nth-of-type(even) h1, section:nth-of-type(even) h2, section:nth-of-type(even) h3, section:nth-of-type(even) h4 { color: #ecfeff; }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: linear-gradient(145deg, #ffffff 0%, #f0fdff 60%, #e0f7fa 100%); border: 1px solid rgba(14,116,144,.1); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #0e7490 0%, #155e75 50%, #164e63 100%); color: #ecfeff; border: 1px solid rgba(14,116,144,.2); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== Section Layout Variants ========== */

/* news: masonry-2 */
/* 两列瀑布流 */
                .news-grid { column-count: 2; column-gap: var(--space-gap); }
                .news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, #164e63 0%, #0e7490 45%, #f59e0b 130%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: 0 28px 56px -12px rgba(14,116,144,.4), 0 12px 24px -8px rgba(245,158,11,.2); color: #ecfeff; }

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
a:not([class]):hover { color: var(--color-accent); }

/* Responsive */
@media (max-width: 1024px) {
    .news-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .feature-list { grid-template-columns: repeat(2, 1fr) !important; }
    .partner-grid { grid-template-columns: repeat(3, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .hero-inner { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
    :root { --space-section: 2rem; --space-card: 1rem; --space-gap: 0.75rem; }
    .news-grid { grid-template-columns: 1fr !important; }
    .feature-list { grid-template-columns: 1fr !important; }
    .faq-list { grid-template-columns: 1fr !important; }
    .testimonial-list { column-count: 1 !important; }
    .partner-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .cta-inner { grid-template-columns: 1fr !important; }
}